La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate Versus La Roche-Posay Mela B3 Dark Spot Serum With Melasyl+Niacinamide
Updated on October 14, 2024
Overview
What they are
These products are both reef safe serums. They have a total of 5 ingredients in common
Cool Features
They both contain exfoliants
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any common allergens, oils or parabens
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate 14 ingredients
La Roche-Posay Mela B3 Dark Spot Serum With Melasyl+Niacinamide 32 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate 14 ingredients
La Roche-Posay Mela B3 Dark Spot Serum With Melasyl+Niacinamide 32 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningAlcohol Denat.
Antimicrobial
Glycolic Acid
Buffering
Propylene Glycol
Humectant
Potassium Hydroxide
BufferingAmmonium Polyacryloyldimethyl Taurate
Emulsion StabilisingTranexamic Acid
Astringent
Kojic Acid
Antioxidant
C12-13 Alkyl Lactate
EmollientHydroxyethylcellulose
Emulsion StabilisingTrisodium Ethylenediamine Disuccinate
Panthenol
Skin Conditioning
Capryloyl Salicylic Acid
Exfoliating
Disodium EDTA
Water
Skin ConditioningDimethicone
Emollient
Niacinamide
Smoothing
Glycerin
Humectant
Propylene Glycol
Humectant
Polysilicone-11
Silica
Abrasive
Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone
Emollient
Cystoseira Tamariscifolia Extract
Skin Conditioning2-Mercaptonicotinoyl Glycine
Skin ConditioningPEG-20 Methyl Glucose Sesquistearate
Emulsifying
Sodium Hyaluronate
Humectant
Sodium Hydroxide
BufferingSodium Thiosulfate
Carnosine
Skin ConditioningPoloxamer 338
EmulsifyingAmmonium Polyacryloyldimethyl Taurate
Emulsion StabilisingDipotassium Glycyrrhizate
Humectant
Caprylic/Capric Triglyceride
MaskingCapryloyl Salicylic Acid
Exfoliating
Caprylyl Glycol
EmollientCitric Acid
Buffering
Trisodium Ethylenediamine Disuccinate
Xanthan Gum
EmulsifyingPentylene Glycol
Skin ConditioningOctyldodecanol
EmollientRetinyl Palmitate
Skin Conditioning
Tocopherol
Antioxidant
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Antioxidant
Phenoxyethanol
Preservative
CI 17200
Cosmetic ColorantParfum
Masking
Water, Dimethicone, Niacinamide, Glycerin, Propylene Glycol, Polysilicone-11, Silica, Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone, Cystoseira Tamariscifolia Extract, 2-Mercaptonicotinoyl Glycine, PEG-20 Methyl Glucose Sesquistearate, Sodium Hyaluronate, Sodium Hydroxide, Sodium Thiosulfate, Carnosine, Poloxamer 338, Ammonium Polyacryloyldimethyl Taurate, Dipotassium Glycyrrhizate, Caprylic/Capric Triglyceride, Capryloyl Salicylic Acid, Caprylyl Glycol, Citric Acid, Trisodium Ethylenediamine Disuccinate, Xanthan Gum, Pentylene Glycol, Octyldodecanol, Retinyl Palmitate, Tocopherol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Phenoxyethanol, CI 17200, Parfum
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterPropylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.
This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.
Those with sensitive skin or conditions may develop a rash when using this ingredient.
Learn more about Propylene GlycolAmmonium Polyacryloyldimethyl Taurate is a polymer made from ammonium salts. It helps add stability and texture to a product. This ingredient is stable over a wide pH range.
Due to its ability to absorb water, it can help thicken the texture of a product. As an emulsion stabilizer, this ingredient is stabilizes other ingredients to create a consistent texture.
According to a manufacturer, it helps create a "smooth, light and fresh" texture.
Learn more about Ammonium Polyacryloyldimethyl TaurateTrisodium Ethylenediamine Disuccinate is used to help stabilize a product.
It is a chelating agent, meaning it helps prevent metal ions from binding to other ingredients. This prevents unwanted reactions in products. Metal ions can come into a product via the water ingredient. They are found in trace amounts and are not known to be harmful.
Capryloyl Salicylic Acid comes from salicylic acid, the famous acne-fighting BHA.
It usually goes by a more common name of LHA, or lipohydroxy acid.
Like salicylic acid, this ingredient is a chemical exfoliant that can help break down the oil in your pores and reduce inflammation.
Though studies for LHA do show it to be less effective than salicylic acid. To be fair, salicylic acid is the reigning monarch of acne treatments.
However, a study from 2009 found LHA to be comparable to BPO, making it a good alternative for people with sensitive skin. Another study of 14 patients found a significant decrease in comedones after using LHA.
Another pro of LHA? It is less irritating than salicylic acid due to its large molecule size.
Large molecules cannot penetrate skin as well, so they are gentler on the skin. LHA is much less penetrative than salicylic acid.
An in-vitro study (not done on a living organism) found only 6% of LHA penetrated past the statum corneum compared to 58% of salicylic acid. An in-vivo (done on a living organism) analysis revealed ~17% of LHA was still present in the top layer of skin after 4 days, versus ~9% of salicylic acid.
Interestingly, a study from 2008 found LHA comparable to another famous acid, glycolic acid.
This study found about 10% of LHA is as effective as 20-50% of glycolic acid in treating hyperpigmentation and fine-lines.
Hydroxy acids have been found to stimulate skin protein, lipids, and thermal thickening. This may have anti-aging benefits.
Learn more about Capryloyl Salicylic AcidIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate 14 ingredients
La Roche-Posay Mela B3 Dark Spot Serum With Melasyl+Niacinamide 32 ingredients
Reviews
Here's what our community thinks
La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate 14 ingredients
La Roche-Posay Mela B3 Dark Spot Serum With Melasyl+Niacinamide 32 ingredients
Haven't noticed any difference in my acne scars so far as all it did was induce purging (has pro-retinol in the ingredients). Been using it for like a month and not noticing any results so far, I've noticed more results after using my Caudalie serum for a week.
i am more than impressed. la roche-posay has truly outdone themselves with melasyl. this serum is an incredible product that quickly and efficiently does its job with minimal irritation. no complaints. i do feel as though it is important to note that when i started using this i had already been using retinol for 2+ months which may have affected my initial reaction to the pro-retinol ingredients Show more
